Adult Smartwool Lolo Trail Full Cushion Crew Hiking Socks 4017-SW001894 Sock Cushion: Full CushionIndestructawool™ technology with extended durability zones4 Degree™ elite fit system for a dialed-in, performance-oriented fitAdditional body-mapped mesh zones for added breathabilityVirtually Seamless™ toe for enhanced comfortComfort welt with 'stay put' fit Features Virtually Seamless toe for enhanced comfort Comfort welt with 'stay put' fit Sock Height: Crew Sock Cushion: Full Cushion Indestructawool technology with extended durability zones 4 Degree elite fit system for a dialed-in, performance-oriented fit Additional body-mapped mesh zones for added breathability Adult Smartwool Lolo Trail Full Cushion Crew Hiking Socks